Category: Physics

How many steps are there to create a good free body diagram? You can draw a free-body diagram of an object following these 3 steps: Sketch what is happening. Determine the forces that act on the object. Draw the object in isolation with the forces that act on it. How do you write FBD? Steps […]

Does ethanol have a high surface tension? Ethyl alcohol has some hydrogen-bonding, but one side of it is a hydrocarbon ( CH bonds), so the hydrogen-bonding in the big picture is not nearly as prominent. Therefore, since water molecules on a liquid surface are harder to push down on the surface tension is higher for […]

Why do you cross your legs on a water slide? There might be some effect there, but keeping the feet crossed has a more important reason. It keeps your legs together, preventing some very uncomfortable issues. Next time try this technique. Cross your legs one ankle over the other as you did. Is water slide […]

Why stone is called matter? Since the stone is made of atoms, it is matter. Anything solid liquid or gas is matter. Yes, it has mass and occupies space. Yes, it has mass and occupies space. How do you remove smoke from air? 3 Ways to Remove Cigarette Smoke From Indoor Air Consider Adding House […]

How do you show distortion in art? Reflections and mirror images are commonly used to create reversal. DISTORTION involves stretching, lengthening, shortening, squeezing, melting and twisting an object from its original appearance to a new, strange, surreal appearance. What artists use distortion? The list of artists who notably distorted the figure is too long to […]

Which is the best example of a scientific discovery? Among the statements that were given, the best example of a scientific discovery resulting from a new technology is “the discovery of the structure of DNA, which occurred as the result of an X-ray image of a DNA molecule”. How is science and technology important to […]

Is confusion a sign of anxiety? Difficulty concentrating can be one sign of an anxiety disorder, and it is a reported symptom in the majority of people diagnosed with generalized anxiety disorder. Can stress make you confused? Stress, anxiety or depression can cause forgetfulness, confusion, difficulty concentrating and other problems that disrupt daily activities. How […]

What is H in E HF? The energy of each photon is E = hf, where h is Planck’s constant and f is the frequency of the EM radiation. Higher intensity means more photons per unit area. What does the H stand for in Planck’s equation? Planck’s constant, symbolized h, relates the energy in one […]

What makes it look like stars are moving? There are actually two different reasons why stars appear to move across our sky. The first is because the Earth is spinning and second because the Earth itself is moving around the Sun. At the same time as the Earth is moving around the sun it is […]

What is it called when a straw bends in water? This bending of light, called refraction, causes the straw to look broken​1​. The portion of the straw that is submerged in water also appears to be wider than the portion of the straw above the water. Why does a spoon look broken in the water? […]